South African Computer Journal (SACJ): Recent submissions

  • Ideologies of information systems and technology 
    Introna, LD (South African Computer Society (SAICSIT), 1994)
    In this paper some views and ideologies of information systems and technology will be explored. Some of these views and ideologies are clearly understood and have a high level of support. There are however more subtle ...
  • EDI in South Africa : An assessment of the costs and benefits 
    Harrington, G (South African Computer Society (SAICSIT), 1994)
    EDI is a method of exchanging common business documentation between organisations by replacing paper transactions with electronic messages. The use of EDI can eliminate or significantly reduce the problems associated with ...
  • Ensuring successful IT utilisation in developing countries 
    Gardner, BR (South African Computer Society (SAICSIT), 1994)
    It is generally accepted that Information Technology (IT) has the potential to promote development and alleviate some of the common problems in the developing countries. However, it would appear that few developing countries ...
  • Effect of system and team size on 4GL software development productivity 
    Finnie, G.R.; Wittig, GE (South African Computer Society (SAICSIT), 1994)
    Modelling the effect of size on software development issues has been the object of considerable research in the software engineering community. The size metrics form an integral part of software project cost estimation ...
  • An evaluation of substring algorithms that determine similarity between surnames 
    De Kock, G de V; Du Plessis, C (South African Computer Society (SAICSIT), 1994)
    The problem investigated in this study is, given a surname, determine similar surnames in a genealogical database. There exist a number of algorithms to determine the similarity between two strings based on their common ...
  • What is information systems? 
    Crossman, T.D. (South African Computer Society (SAICSIT), 1994)
    This paper is an attempt to answer the question 'What is Information Systems?' While the characteristics of both a science and a non-science can be identified in Information Systems (IS), it is argued here that it is not ...
  • Metadata and security management in a persistent store 
    Berman, Sonia (South African Computer Society (SAICSIT), 1994)
    Since its emergence in the early eighties, persistence has become an important branch of Computer Science. Many persistent systems have now been developed and a wide variety of related issues have been well researched. Two ...
  • Markovian analysis of DQDB MAC protocol 
    Bause, F; Kritzinger, P; Sczittnick, M (South African Computer Society (SAICSIT), 1994)
    The Distributed Queue Dual Bus (DQDB) protocol or IEEE 802.6 has been accepted as the international standard for Metropolitan Area Networks (MAN). This paper describes a combined MIG/I and Markov model for the steady state ...
  • Introduction to computability theory 
    Zucker, J; Pretorius, L (South African Computer Society (SAICSIT), 1993)
    These are notes for a short introductory course on Computability Theory (or recursive function theory). The basic notion of computability is defined in terms of a simple imperative programming language.
  • A working relational model: The derivation of the Dijkstra-Scholten predicate transformer semantics from Tarski's axioms for the Peirce-Schroder calculus of relations 
    Maddux, RD (South African Computer Society (SAICSIT), 1993)
    The definitions for Dijkstra's predicate transformer semantics can be justified by considering the meaning of a program as a binary relation on states (which holds between two states if there is a terminating computation ...
  • Denotational semantics and domain theory 
    Goslett, J.; Hulley, H; Melton, A (South African Computer Society (SAICSIT), 1993)
    This tutorial is an introduction to denotational semantics and domain theory. For this reason the presentation is not entirely rigorous, with some proofs being omitted and certain simplifying assumptions being made. Instead, ...
  • The key issues in information management in the mid-1990s. Back to business basics through the commercialisation of the ISD 
    Remenyi, DSJ (South African Computer Society (SAICSIT), 1993)
    This paper takes a business or commercial perspective of the key issues in Information Management for the mid-1990s. It focuses on how organisations may use information systems to improve their efficiency and effectiveness ...
  • Expert systems for management control: A multi-expert architecture 
    Ram, V (South African Computer Society (SAICSIT), 1993)
    The use of Expert Systems technology in management decision making domains is increasing rapidly as business environments worldwide grow more turbulent and as the cost of development tools decrease. Research effort in this ...
  • Deduction systems based on resolution 
    Eisinger, N; Ohlbach, HJ (South African Computer Society (SAICSIT), 1993)
    A general theory of deduction systems is presented The theory is illustrated with deduction systems based on the resolution calculus, in particular with clause graphs. This theory distinguishes four constituents of a ...
  • Assessing the usability of computer systems 
    Parker-Nance, TC; Warren, PR (South African Computer Society (SAICSIT), 1993)
    Usability problems with computer systems can be divided into three broad categories: problems due to the socio/political environment, problems due to the usefulness of systems, and problems due to the accessibility of ...
  • SSDE: CASE in education 
    Norman, MJ; Berman, Sonia (South African Computer Society (SAICSIT), 1993)
    Software Engineering is a difficult and time-consuming discipline to learn. CASE Tools are generally expensive, prescriptive and tedious to use. Structured Software Development Environment (SSDE) was developed as a teaching ...
  • An enquiry into property-goal type definitions of the term "information system" 
    Mullany, M; Dos Santos Gomes, A; Miller, R (South African Computer Society (SAICSIT), 1993)
    After reference to IS authors such as Lay [7J it becomes evident that there is as yet no unified definition of the term "information system." This research has attempted to extract, from the relevant literature, the supposed ...
  • A simulation environment for evaluating distributed query processing algorithms 
    Lamprecht, SM (South African Computer Society (SAICSIT), 1993)
    Distributed database systems provide users with the facility to utilize and maintain information that is geographically dispersed in files at several sites while they remain unaware of the distribution of the information. ...
  • Die versoening van konflikterende doelwitte in die databasisomgewing met behulp van regressiemetodes 
    Jordaan, DB; Hattingh, J.M.; Steyn, T (South African Computer Society (SAICSIT), 1993)
    Daar bestaan baie voorbeelde in die dataverwerkingswêreld van gebruikers wat nie die inligting vanuit huIlle rekenaarstelsels kry wat hulle nodig het nie [26]. Nuwe en onvoorsiene vrae en versoeke vir inligting neem by die ...
  • Die empiriese evaluering van variasie van woordpassingalgoritmes vir die bepaling van ekwivalente vanne in 'n genealogiese databasis 
    De Kock, G de V; Du Plessis, C (South African Computer Society (SAICSIT), 1993)
    An evaluation is made of the success of equivalence algorithms to be used for surname matching in a South African Genealogical Database. Surnames in the database can be grouped in ideal equivalence classes. The algorithms, ...

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